This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | -1 |
3 | 2 |
4 | 4 |
5 | 21 |
6 | 75 |
7 | 286 |
8 | 1064 |
9 | 3977 |
10 | 14839 |
11 | 55386 |
12 | 206700 |
13 | 771421 |
14 | 2878979 |
15 | 10744502 |
16 | 40099024 |
17 | 149651601 |
18 | 558507375 |
19 | 2084377906 |
20 | 7779004244 |
21 | 29031639077 |
22 | 108347552059 |
23 | 404358569166 |
24 | 1509086724600 |
25 | 5631988329241 |
26 | 21018866592359 |
27 | 78443478040202 |